Question

1 multiple choice 10 points a nucleotide of dna may contain ribose, uracil and phosphate deoxyribose, uracil and thymine ribose, phosphate, and adenine deoxyribose, phosphate, and cytosine 2 multiple choice 10 points which of the following is true about active transport? facilitated diffusion is one type of active transport it does not require energy it requires channel proteins it requires atp 3 multiple choice 10 points what are the types of nucleic acids? enzymes and hormones dna and rna carbohydrates and nucleotides proteins and lipids

Explanation:

1. DNA nucleotides contain deoxyribose sugar, a phosphate group, and one of the nitrogen - containing bases (adenine, thymine, cytosine, or guanine). Uracil is in RNA, not DNA, and ribose is the sugar in RNA.
2. Active transport is the movement of molecules across a cell membrane against their concentration gradient and requires energy in the form of ATP. Facilitated diffusion is a type of passive transport, and while some active transport uses carrier proteins, not all require channel proteins.
3. The two main types of nucleic acids are DNA (deoxyribonucleic acid) and RNA (ribonucleic acid). Enzymes are proteins, hormones can be various types of molecules, carbohydrates are a different class of biomolecules, nucleotides are the building blocks of nucleic acids, proteins and lipids are also different classes of biomolecules.

Answer:

1. D. deoxyribose, phosphate, and cytosine
2. D. It requires ATP
3. B. DNA and RNA